How to find COM port for a specific USB devices connected.

Question

I'm trying to get the list of com port name and the device's name connected to it. (eg: I want to automatically find the COM port for a specific USB device of Fastrack modem M1206B series). In the case where it finds multiple possible ports and i want only finds the port depending on what other usb devices are connected. I tried the following where I get only the list of com ports.

[CODE]  

string[] ports = SerialPort.GetPortNames();

foreach (string port in ports)

{

cboCOM.Items.Add(port);

}

[/CODE] 

But I need get COMPort only finds the port depending on what other usb devices are connected.